Leveling device for boilers.



v1I0.858,332. PATENTED UNE 25, 1907-) 4 F. L CASS.

:LEVBLING DEVICE FOR BOILERS.

APPLICATION FILED MAR. 25, 1907.

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NO. 858,332; PATENTED JUNE 25, 1907.

- ,P. 1. CASS.

' LBVELING DEVICE FOR BOILERS.

APPLICATION FILED MAR. 25, 1907.

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. UNITED STATES rA EN OFFICE.

FREDERICK IDDO CASS, OF CLINTONVILLE, WISCONSIN, ASSIGNOR HALF To EDWARD 'F LsoHow,

OF CLINTON YILLE, WISC ONSIN.

LEVELING DEVICE FOR BOILERS.

v Specification of Letters Patent.

Patented June 25, 1907.

\ Application filed M h 25,1907. Serial No. 364,623.

To all it'ma/y concern:

'Be it known that I, FREnERIoK InnoCAss, a citizen of the United States, residing at Clintonville, in the county of Waupaca and State" of Wisconsin, have invented certain new anduseful Improvements in Leveling Devices. for

Boilers, of which the following is a specificavice of this kind, together is a plan view.

Fig. 3' is an elevation taken the opposite tion; 1

v This invention is a leveling device for the boilers of portable or traction engines, and

has for its object to provide an improved deith means for operating the same by the en 'ne. I

' The invention comprises a series of indeendcntly operated jack-sore ,s on whichthe boiler is mounted, and a geariljig between the jack-screws and the crank-shaft of the en ine. 4 g In the accompanying draniings, Figure 1 Fig] 2' is a ?"side elevation.

side. Fig. 4 is a detail.

Referring specifically. to the drawings, 10- denotes the boiler of a portable traction engine. The boiler is mounted on jack-screws one of which is located at the front end, and I one on each side at the rear end of the boiler.

. 13 loosely passes.

.To-the top of the boiler at its front end is bolted or otherwise secured a bracket 11 havthe screw, the'latter being prevented from turning by the squared portion 14, The nut" 16 is in the form of 1a worm-wheel which meshes with a worm 17. The shaft of the worm is in two sections indicated at 18 and 19, respectively. The section 18 is jour naled in suitable bearings in the bracket. 11 and carries the wor1n17. To one end of the shaft-section 19 is fixed an upstanding arm v20 which is hung on a pin '21 projecting from a standard 22 secured to the top of the boiler. The arm '20 is slotted as at 23 to receive thepin 21. The opposite end of the shaft-section 19 connected by a universal 4 'joint 24 to the shaft-section 18. On the meshes witha worm 26 onthe crank-shaft 2 7 of the engine 28. To the arm 20 is piv oted one of the members of a pair of toggle-- arms 29, the other arm being pivoted to a ,bracket 30"secured to the side of the boiler.

. The operating-rod 31 of the toggleexte'nds to the rear 'end'of the boiler so as to be within easy reach of the attendant. is pushed forwardly the. tog lesarms are straightened out which raises t e shaft-secwheel 25 into gear, When the rod is pulled rearwardly the toggle-arms recede from each other which lowersthe shaft-section 19 and of gear. The pur ose'of the universal joint 24 between the shaft-sections is to permit this movement of the shaft-section 19.

On top of the boiler at the rear end therescre'w-stems are s uared as *indicated'at 35 and 36,.res'pect1ve y, in the same manner as ftions pass through vertical guide-openings in a bracket 37 secured to the bottom of the boiler at its rear end and projecting from the sides thereof.

When the. rod 1 throws the worm 26 and worm-wheel 25 out of is secured a saddle 32 which projects from the sides of the boiler and has vertical open- Y ings through which the rear jack-screws.

33 and 34, respectively, loosely pass. The

the front screw-stem, and said squared 'por-g tion 19 and throws the worm 26 and worm- The nuts which travel on the rear jackscrews are indicated at 38 and 39, respectively, they being inthe form of-bevel gears,

and are. mounted on the screw-stems be tween the saddle 32 and a plate 40 which is connectedby rods 41 with the bracket 37.

The late 40 has vertical 0 enings through whic the screw-stems loose y ass. When the nuts 38 and 39 are turned t ey travel up .95 or down on the screw-stems and by their en'- 7 agement with the plate 40 they will raise or ower the rear endof the boiler. stems are prevented from turning by their squared portions. The plate 40 also has openings 42 to receive bevel pinions 43 and 44, respectively, which mesh with the gearof the pinion 43 is in two sections indicated at 45 and 46, respectively, the formerbeing. journaled in suitable bearings 1n the plate y 40. The shaft-section 46 is supported at one end in a vertically movable bearing-block 47 The screw-I Ioo wheels 38 and 39,'re, spec,tively." The shaft if shaft-section 19 is a worm-wheel 25. which I oted respectively to the block 47 and a bracket 55 secured to the boiler. The toggl'es are'operated by a rod 56 in the same manner as the toggles 29. This rod also extends'to the rear end ofthe boiler within easy reach of the attendant, The shaft of the bevel pinion 44' is also in two sections indicated at 57 and 58, respectively, which are mounted and operated in the same manner as the shaft-sections and 46. The worm,- wheel 59 on the shaft-section 58 meshes with a worm-60 on the crank-shaft 27 at the opposit'e end from the worm 26. A toggle 61 and operating-rod 62 for throwing the .worm 60 and the'worn1-wheel 59 into and outof gear are also provided, these parts being mounted and operated in the same-manner as the toggles heretofore described.

In order to provide a firm foundation for the jack-screws, they are fitted with shoes 63 which are serrated on the bottom as at 64 to prevent slipping. The shoes have "vertical openings 65 into which the screw-stems extend and in which they are pivotally secured by transverse pins. The pivot pin 66 of the front j ack-screw is arranged. lengthwise with respect to the boiler, and the pivot pins 67 of the rear jack-screws are arranged transversely with respect to the boiler by reason of which the shoes-will accommodate themselves to uneven ground. This arrangement, together with the fact that each jackscrew can be operated independentlyalso permits the boiler to be tilted to one side by operatingeither one of the rear j ack-screws,

and also to be tilted forwardly or rearwardlyby operating the front jack-screw. It will therefore be seen that the device has a wide range of usefulness and enables the boiler to be accurately leveled.

I claim 1. .The combination with a boiler, an en gine mounted thereon, and its crank-shaft, of a bracket on the boiler and having avertical opening, a screw-stem passing through said opening, a traveling nut on the screw and engageable with the aforesaid bracket, said nut being in the form of a worm-wheel, a counter-shaft having a worm meshing with .the worm-wheel, a worm-wheel on the counter-shaft, and a worm on the crank-shaft -meshing with the last mentioned wormwheel.

2. The combination with a boiler, an engine mounted thereon, and its crank-shaft, of a bracket on the boiler and having a vertical opening, .a'screw-steni passing through said opening, a traveling nut on the screw and engageable with the aforesaid bracket, said nut being in the form of a worm-wheel, a sectional counter-shaft, a universal joint connecting said sections, a worm on one of the sections meshing with the aforesaid wormwheel, a worm-wheel on the other shaft-section, a worm on the crank-shaft meshing with the last mentioned Worm-wheel, and means for throwing the last mentioned worm and worm-wheel out of gear.

3. TlIG'COIDblIIabiOD with a boiler, an en-' gine mounted thereon,and its crank-shaft, of a screw-stem, a traveling nut on the screw, said nut being in the form of a bevel gear, an abutment carried by the boiler and engageable by the nut, a counter-shaft having a bevel pinion meshin with the aforesaid gear, a worm-wheel on the counter-shaft, and a worm on the crank-shaft meshing with the worm-wheel.

4. The combination with a boiler, an engine mounted thereon, and its crank-shaft, of a screw -stem, a'traveling nut on the screw, said nut being in the form of a bevel gear, an abutment carried by the boiler and envgageable by the nut, asectional countershaft, a universal joint connecting said section, a bevel pinion on one of the sections meshing with the aforesaid gear-whee,l a Worm-wheel on the other section, a worm on the crank-shaft meshing with the worm v wheel, and means for throwing said worm andworm-wheel out of gear.

In testimony whereof I' am): my signature, 

